Question 1

Which of the following plant/animal interactions is not a mutually beneficial (mutualistic)relationship?

Accepted Answer

E

Question 2

Based on studies of plant evolution and anatomy, which flower part is least likely to have evolved from a leaf?

Accepted Answer

The receptacle is the part of the flower stalk where the parts of the flower are attached, not directly evolved from a leaf, unlike the stamen, carpel, petals, and sepals which are considered modified leaves adapted for reproduction.

Question 3

A mature, unfertilized ovule in an angiosperm is the result of

Accepted Answer

A mature, unfertilized ovule in an angiosperm undergoes both meiotic and mitotic divisions. The megaspore mother cell first undergoes meiosis to produce four haploid megaspores, one of which survives and undergoes mitotic divisions to form the embryo sac, the female gametophyte.

Question 4

The ovary is most often located on/in the

Accepted Answer

The ovary is the female reproductive structure in a flower and is part of the carpel. It contains the ovules which develop into seeds after fertilization, and ultimately, the fruit of the plant.

Question 5

In some angiosperms, other floral parts contribute to what is commonly called the fruit. Which of the following fruits is derived mostly from an enlarged receptacle?

Accepted Answer

Apples are derived mostly from an enlarged receptacle, which is the base of the flower that the fruit develops from. The other options are not primarily derived from an enlarged receptacle. Peas and raspberries are derived from the fusion of several ovaries within a single flower, pineapples are derived from many individual flowers fused together, and peaches are derived from a single ovary with a hard, stony endocarp layer.

Question 6

Which of the following is true in plants?

Accepted Answer

This is the only option that correctly includes all three statements as true. A and B only include one statement, while C is not entirely correct (the gametophyte is not always within the flower, as it can also be found in other reproductive structures such as cones in conifers).

Question 7

All of the following are primary functions of flowers except

Accepted Answer

Flowers do not primarily function in photosynthesis, as they lack the necessary structures like leaves and chloroplasts to carry out this process. Flowers primarily function in sexual reproduction, specifically in the production of pollen and eggs, which undergo meiosis to produce gametes for fertilization.

Question 8

All of the following floral parts are involved in pollination or fertilization except the

Accepted Answer

Sepals are not involved in pollination or fertilization. Their primary function is to protect the developing flower bud.

Question 9

Which of the following is the correct order of floral organs from the outside to the inside of a complete flower?

Accepted Answer

The correct order of floral organs from the outside to the inside of a complete flower is sepals → petals → stamens → carpels. Therefore, option D is the correct choice.

Question 10

A flowering plant with a deleterious mutation in microsporogenesis would most likely

Accepted Answer

Microsporogenesis is the process of making pollen in plants. If there is a deleterious mutation in microsporogenesis, the plant would most likely fail to produce pollen, leading to infertility or reduced fertility. The other options are not directly related to microsporogenesis.

Question 11

The male wasp, Campsoscolia ciliata, transfers pollen from one orchid to another orchid of the same species. What "reward" does the male wasp receive from the orchid plants for helping with the orchid pollination?

Accepted Answer

The male wasp, Campsoscolia ciliata, is deceived by the orchid's shape and odor, which mimic the appearance and pheromones of a female wasp, leading the male to attempt copulation with the flower. This process, known as pseudocopulation, ensures pollination without the orchid providing any real reward to the wasp.

Question 12

When comparing the mature seeds of a pine tree to an apple tree, which of the following is a correct statement?

Accepted Answer

Pine trees and apple trees both contain haploid tissues such as the female and male gametophyte, and they also contain diploid tissues such as the seed coat and embryo. Thus, both contain haploid and diploid tissues, making option E the correct statement. However, the developmental sequences postfertilization are different between the two tree species, making option A incorrect. Option B is also incorrect since only the apple tree contains triploid tissue in the endosperm of the seed. Option C is incorrect as the nutritive tissues of a pine tree seed, the female gametophyte, and the seed coat are all diploid. Option D is also incorrect since both pine and apple seeds have a diploid seed coat.

Question 13

Which of the following is the correct sequence during the alternation of generations life cycle in a flowering plant?

Accepted Answer

The answer of Which of the following is the correct...

Question 14

Meiosis occurs within all of the following flower parts except the

Accepted Answer

Meiosis occurs in the reproductive parts of the flower that are involved in the formation of gametes, such as the ovule (A), megasporangium (C), anther (D), and ovary (E). The style (B) is a part of the pistil that connects the ovary to the stigma and does not undergo meiosis; it is involved in the process of guiding pollen to the ovary for fertilization.

Question 15

Which of the following are true of most angiosperms?

Accepted Answer

Most angiosperms have an ovary that becomes a fruit and a triploid endosperm within the seed. However, not all angiosperms have a small (reduced) sporophyte, so option E is not entirely true. Option A is incorrect because not all angiosperms have a triploid endosperm - it varies depending on the species.

Question 16

Microsporangia in flowering plants are located in the

Accepted Answer

Microsporangia are located in the stamen, specifically in the anther.

Question 17

Carpellate flowers

Accepted Answer

Carpellate flowers are those that have carpels, which are the female reproductive structures. These flowers are capable of producing fruits when fertilized, hence they develop into fruits.

Question 18

Which of the following best describes the ploidy level of a fertilized embryo sac?

Accepted Answer

In a fertilized embryo sac, there are haploid (n), diploid (2n), and triploid (3n) cells. The egg cell (haploid) fuses with a sperm cell (haploid) to form the zygote (diploid). The central cell, which is diploid, fuses with another sperm cell to form the endosperm, which is triploid.

Question 19

At the conclusion of meiosis in plants, the end products are always four haploid

Accepted Answer

Meiosis in plants ultimately leads to the production of four haploid spores, which can then undergo further development to become gametophytes or sporophytes depending on the specific plant species. Eggs and sperm are not end products of meiosis in plants, as these are typically produced by specialized structures such as flowers or cones. Seeds are also not end products of meiosis, but rather form as a result of fertilization and subsequent maturation of the ovule.

Question 20

A perfect flower is fertile, but may be either complete or incomplete. Which of the following correctly describes a perfect flower?

Accepted Answer

A perfect flower has both stamens and carpels, which means it has male and female reproductive structures in the same flower. This allows for self-fertilization, but the flower can still be pollinated by other plants.

Quiz 38: Angiosperm Reproduction and Biotechnology

Which of the following plant/animal interactions is not a mutually beneficial (mutualistic) relationship?